Which Voice Service Modes Do AR Series Routers Support?
Currently, AR series routers support the following two voice service modes: Session Initiation Protocol access gateway (SIP AG) ,H.248 access gateway (H248AG) and private branch exchange (PBX). You can run the display voice service-mode command to view the voice service modes of the current AR.
To switch between modes, run the service-mode { sipag | h248ag | pbx } command in the voice view.

